form.js

(function ($, undefined) {

    if ($.forms !== undefined) {
        $.error("forms.js has already been loaded.");
    }

    var forms;
    $.forms = forms = {
        href: function (element) {
            return element.attr('href');
        },

        formElements: function (form, selector) {
            return form.is('form') ? $(form[0].elements).filter(selector) : form.find(selector);
        },

        handleRemote: function (element) {
            var method, url, data, dataType, options, elCrossDomain, crossDomain;
            method = element.attr('method');
            url = element.attr('action');
            data = element.serializeArray();
            dataType = element.data('type');
            elCrossDomain = element.data('cross-domain');
            crossDomain = elCrossDomain === undefined ? null : elCrossDomain;
            url = forms.href(element);
            options = {
                type: method || 'GET',
                data: data,
                dataType: dataType,
                success: function (data, status, xhr) {
                    element.trigger('ajax:success', [data, status, xhr]);
                },
                complete: function (data, status) {
                    element.trigger('ajax:complete', [data, status]);
                },
                error: function (xhr, status, error) {
                    element.trigger('ajax:error', [xhr, status, error]);
                },
                crossDomain: crossDomain
            };

            if (url) {
                options.url = url;
            }

            return $.ajax(options);
        }
    };
}) ( jQuery );